Bread slicing machine



Oct. 25, 1932. H. STUKART BREAD SLICING MACHINE Filed Jan. 30, 1925 2Sheets-Sheet 1 Oct. 25, 1932- STUKART 1,884,912

BREAD SLICING MACHINE 2 Sheets-Sheet 2 Filed Jan. 3 1925 Patented Oct.25, 1932 umrsn stares COMPANY, OF LA FORTE,

rarest series HENDRIK STUKART, OF LA FORTE, INDIANA, ASSIGNOR TO U. S.SLICING MACHINE INDIANA, A CORPORATION OF INDIANA BREAD SLICIN G MACHINEApplication filed January 30, 1925. Serial No. 5,681.

This invention relates to bread slicing machines similar to that shownin my prior application, Serial No. 683,547, filed December 23,1923.

The invention has for its object the provision ofa bread slicer whichshall be of im proved construction and operation, and in which a moredirect drive is provided than that shown in my prior application, and inwhich improved means is provided for feeding the bread to the slicingknife;

The invention is exemplified in the com bination and arrangement ofparts shown in the accompanying drawings and described in the followingspecification, and it is more particularly pointed out in 'the appendedclaims.

In the drawings- Fig. 1 is a front elevation, with parts in section,showing one embodiment of the present invention Fig. 2 is a section online 22 of Fig. 1;

Fig. 3 is a section on line 3-3 of Fig. 1; and

Fig. 4 is a section on line 4-4 of Fig. l.

The

slicing machine comprises a front by rods 12 and 13 and a sleeve 14. Abread trough or slideway 15 extends from the rear to the front bracketand is supported by a bar 16 connected to the brackets at their ends. Ashaft 17 is enclosed in the sleeve14 and journaled in the brackets. Adrive wheel 18 is mounted on the rear end of the shaft 17 and a yoke 19is secured to the forward end of the shaft. which is j ournaled on asleeve 21 secured to the bracket 10 in spaced relation but in axialalinement with the bearing for the front end of the shaft a bearing 22having eccentric bushings 23 therein in mounted, knife 25 fixed to therear end thereof and a sprocket wheel 26 is formed on the spindleadjacent the rear face of the slicing knife.

The bearing 22 isprovided with a'lock bolt 27 for holding the eccentricbushings 23 in adjusted positions. By releasing the bolt 27 and shiftingthe bushings 23 the axis of The yoke 19 carries an arm 20 i 17. The arm20 is provided with which a spindle 2 4 is rot'atably The spindle 24carries a slicing the spindle 24 may be shifted to adjust the tension inthe sprocket chain passing over the sprocket wheel 26. A second sprocket28 is fixed to a spindle 29 extending through the sleeve 21 androtatably mounted therein. A hand crank30 is fixed to the forward end ofthe spindle 2 9 and is provided with a stop 31 by means of which thehand crank may held against rotation. This will lock the sprocket wheel28 in fixed position so that when the yoke 19 is rotated by the shaft 17the sprocket chain connecting the wheels-26 and 28 will impart a rotarymovement tov the knife 25 in addition to i s revolution about the axisof the shaft 17. A lock pin 32 is provided on the bracket llforlockingthe hand wheel 18 against rotation.. It will be apparent that by causingthe lock pin 32 to engage an opening 33 in' the drive wheel 18 the arm20 may be locked in its uppermost position. The handle 34 for the handcrank 30 may then be rotated into the broken line positions shown inFig. 1 which will release the hand crank and permit rotation of thesprocket Y Wheel 28 thereby. .This rotation will drive the knife 25 on afixed axis.

A removable cover 36 is provided for the upper portion of the casingwhich encloses the knife 25. By removing the cover 36 the sharpener 37may be brought into ment with the edge ofthe knife forsharpening theknifewhile being rotated by the hand crank. 'A second opening 38 isprovided in the drive wheel 18 diametrically opposite the opening 33.This will permit the knife to belocked in its lowermost positiontofacilitate cleanin i The loaf of bread 39 or other article to besliced is held by a follower 40 having, a front plate 41 against whichthe rear end of the loaf is placed. A tooth carrier 43 ispivotallymounted at 44 on the follower 40 and is provided with a. plurality ofcurved teeth 45 which project through. slots 46 in the upper edge'of thefront plate 41. A spring 47 normally urges the teeth 45 into theiroperative position' to engage the loaf 39, as shown in F ig. 1. Sincethe teeth are curved, the spring 47"1noves the teeth. in a direction notonly toward the portion of the clamp upon which engageloaf is held. Ahand piece 48 extends upas viewed in Fig. 3.

naled 1n the end brackets 10 and 11 and 1s,

wardly from the tooth carrier 43 in position to be engaged by the thumbof the operator when it is desired to release the loaf or to return thefollower to its initial position at the rear end of the bread slide 15.The follower 10 is supported on a bracket d9 secured by screws to sleeve51 slidably mounted on he rod 12. A handle52 is secured to the sleeve 51for moving the sleeve 51 along the rod. A bell crank lever 53 is pivotallyconnected at 54 to the sleeve 51 and is provided with adownwardly extending fork 55 which engages a pin 56 inthe end of a sliderod 5?.

A housing 58 extends downwardly from the sleeve 51 for supporting theslide rod 57 and a spring 59 is mounted in the housing 58 for normallyurging the rod 57 to theleft,

A feedscrew 60 is ourintermittently rotated for feeding the followerldtoward the slicing knife. The rod 57 is provided with a toothed end 61for engaging the threads on the screw 60. A bracket 62extends inwardlyfrom the housing 58 and is provided with a frictional contact member 63arranged in position to engage the lower face of the bar 16. The member63 may be made of fibre or other suitable ma terial.

' It will be apparent that the spring pressure on the teeth 45 inforcing the teeth into the loaf will tend to lift the follower 40 awayfrom the runway 15. The contact member 63 will counteract this force andretain the follower. in its proper-position on the runway. The contactmember 63 also provides frictional engagement to prevent overthrow of hefeeding mechanism at the end of a feed-.

ing operation, hus insuring uniformity in the slices produced.

The screw 60 is provided with a one-way drive (i l at its rear end towhich a link 65 is pivotally connected. The upper end of the link 65 ispivoted at 66 to a sleeve 67 supported on a rod 68. The rod 68 issecured to a bracket pivoted at 70 on the rear frame member 11. Thebracket 69is provided with a cam roller 71 which engages a cam 72 on thedrive wheel 18. It will be noted from Fig. 1 that the cam roller 71 isdisposed within acontinuous circular flange 73 on the drive wheel 18v sothat if the cam shouldbe thrown outwardly by centrifugal action it willengage the smooth inner surface of the continuous flange 7 3 and therewill be no danger of any ofthe parts jamming to stop the machine orbreak the mechanism. Such action on the part oft-he cam roller 71 isnormally prevented, however, by the spring 74 which holds the cam roller71 against the drive surface of the cam 72. It will be seen that at eachoscillation of the linkv 64 the screw 60 will be rotated to feed thefollower 10 toward the slicing knife. The amount of rotation may beregulated by the sleeve 67 along the rod 68.

As will be seen from Fig. 2, the front portion of the rear bracket 11 isleft, entirely open so as to provide space for the operators hand whenthe follower l0 is moved backwardly to its rearmost position. Thispermits the follower tobe slid to the right, as viewed in Fig. 1, asufiicient amount to utilize substantially the entire length of theslideway 15 for long loaves of bread. When the follower is movedto itsrearmost position the toothed member 61 will be brought intoregistrationwiththe endv portion ofthe bearing 7 5 in which the rear end of. the

screw 601s journaled. This, will prevent the: toothed member 61 fromengaging the threads of the screw so that rotation of. the

drive wheeli18' will not. feed the followerfon: allowing opportunity tosecure.

wardly, thus 7 a new loaf. against theface of the plate ll,

Ifit should desired to adjust the parts so that the. follower willimmediately begin its forward movement a stop bar 7 6 is provided whichmay beswung into position to engage the end of the rod 12 so that thesleeve 51 Wlll engage position that the toothed member 61- willmi ss thebearing 7 5 and engage the threads of the.

hand in adiustlng material on said slideway V 2. A slicing machinecomprising a pain.

of spaced supports, a slideway connecting said supports, said slidewayhaving a side wall at one side thereof but having theopposite sidethereof open, and slicing mechanism disposed adjacent one of saidbrackets while the other of-said brackets extends past said slideway onthe side thereofadjacent said:

side wall but is open at the opposite side of said slideway to permitfree movement of the operators hand.

3. A slicing machine comprising apair of,

spaced brackets, a slideway'connectingsaid brackets, a drive shaftarranged above said slideway and Journaled in said brackets, and shcmgmechanism supported on one of said brackets, the other of said bracketsbeing provided. with supporting member at one side of said slidewayonly.

4:. Slicing mechanism comprising a slideway, a guide rod at one side ofsaid slideway, a sleeve slidablymountedron said guide; rod.

and a bracket connected with said sleeveand the stopbar andthus arrestthe. rearward movement of the follower insuch arranged to engage thelower side of said slideway.

5. A slicing machine comprising a slideway, a guide rod at one side ofsaid slideway, a sleeve mounted on said guide rod, a follower connectedwith said sleeve and disposed over said slideway, a feed screw, meansconnected with said sleeve for engaging said feed screw, and africtional device connected with said sleeve and arranged to engage thelower face of said slideway.

6. A slicing machine comprising a sheet metal slideway, a supporting barextending longitudinally of said slideway and secured to the interiorface thereof, a follower arranged to travel along said slideway, and africtional device connected with said follower and arranged to engagesaid supporting bar.

7. A slicing machine comprising a slideway having one side thereof open,a guide rod disposed adjacent said open side, a feed screw arrangedbeneath said slideway, a sleeve on said guide rod, a follower connectedwith sai d sleeve and disposed over said slideway, a spring actuatedtoothed member connected with said sleeve for engaging said fee-d screw,a handle for releasing said toothed member, and a bracket connected withsaid sleeve and projecting beneath said slideway for engaging the lowerface of said slideway.

8. A slicing machine comprising a slideway, a follower arranged totravel along said slideway, a feed screw for moving said follower alongsaid slideway, a spring actuated member for engaging said feed screw,said follower being movable into one position at the extremity of itsrange of travel in which said spring actuated member is prevented fromengaging said feed screw, and means for preventing said follower frombeing moved to said position.

9. A slicing machine comprising a slide way, a follower for movingmaterial along said slideway, a feed screw for actuating said follower,means connected with said follower for engaging said feed screw, andmeans which may be set at the will of the operator for either permittingor preventing operative connection between said follower and feed screwwhen said follower is moved to its extreme position.

10. A slicing machine comprising a slideway for supporting the substanceto be sliced, a member carrying a plurality of teeth spring pressedtowards said slideway, means for guiding said member in the direction ofsaid slideway, and means operatively connected with said member andextending under said slideway from the side on which said member isarranged and having a portion thereof in engagement with the under sideof said slideway to prevent movement of said member away from saidslideway.

11. A slicing machine comprising a substance support, a work holder formoving a substance along said support, feeding means for said workholder, a slicing knife, means for retracting said work holder to anextreme position away from said knife in which said feeding means isinoperative, and a stop movable into operative position at the will ofthe operator for preventing movementof said work holder to said extremeposition.

12. A slicing machinebomprising a slicing knife, 2. work holder formoving the substance to be sliced towards the slicing knife, afeed screwand a feed nut for feeding said work holder toward the slicing knife,means normally urging said feed nut and said feed screw into engagementwith each other, means for withdrawing said feed nut from engagementwith said feed screw to permit the operator to move said work holder toan extreme position away from said knife, an abutment arranged so as tobe interposed between said feed nut and said feed screw in said extremeposition, and a movable stop member movable by the operator into aposition to prevent movement of said work holder to a position in whichsaid abutment is interposed between said feed nut and feed I screw.

13. A slicing machine comprising a knife mounted to rotate about its ownaxis and an axis eccentric to its own axis, driving gears concentricallymounted with reference to said axes, means for operatively connectingsaid driving gears, means operable by the operator for holding one ofsaid gears stationary or for rotating said gear depending upon themovement which it is desired to give to said slicing knife, said meanscomprising an arm, and a handle pivoted to said arm and carrying a stopthereon adapted to cooperate with a rigid stationary abutment when saidhandle is in one position and to be out of engagement with said abutmentwhen said handle is in another position of adjustment.

14. A slicing machine comprising a substance support, a work holder formoving a substance along said support, a feeding means for said workholder, a slicing knife, means for retracting said work holder to anextreme position away from said knife, said feeding means comprising afeed screw and a follower and being rendered totally inoperative by themovement of said work holder to said extreme position, and a stopmovable into operative position at the will of the operator forpreventing movement of said work holder to said extreme position. I

In testimony whereof I have signed my name to this specification on this27th day of January, A. D. 1925.

, HENDRIK STUKART.

